<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
    <cpn></cpn>
    <cpn></cpn>
    <cpn></cpn>
</div>

<template id="cpn">
    <div>
        <h2>当前计数:{{counter}}</h2>
        <button @click="increment">+</button>
        <button @click="decrement">-</button>
    </div>
</template>


<script src="../js/vue.js"></script>
<script>
    //1.注册组件
    Vue.component('cpn',{
        template: `#cpn`,
        data() {
            return{
                counter: 0
            }
        },
        methods: {
            increment(){
                this.counter++;
            },
            decrement(){
                this.counter--;
            }
        }
    })

    const  app = new Vue({
      el:'#app',
      data:{
        message: '卢本伟牛逼！'
      }
    })
</script>
</body>
</html>